baber/WOPTO huggingface dataset:
Patent GB-660054-A (GB)
Title: Production of vinyl sulphides
Filed: 1949-02-11
Abstract: Vinyl sulphides of formula R.S.CH=CH2 are prepared by pyrolysis in an inert atmosphere of a symmetrical sulphide of formula R.S.CH2CH2.S.R, where R is a thermally stable monovalent radical.  The pyrolysis temperature is preferably 350-500 DEG  C. R may be alkyl, e.g. ethyl, butyl, decyl, or octadecyl, cyclohexyl, aryl, e.g. naphthyl, substituted aryl, e.g. by halogen or alkyl such as tolyl, chlorophenyl, or nitrophenyl aralkyl, e.g. benzyl or 2-phenylethyl, or a heterocyclic group, e.g. pyridyl.  A thiol, R.SH, is formed as a by-product.  In an example, 1 : 2-dithiophenylethane is pyrolysed to give phenyl vinyl sulphide and thiophenol.
Patent GB-982165-A (GB)
Title: Improvements in or relating to stabilised frequency oscillator circuit arrangements
IPC: H03C3/20
Filed: 1963-01-30
Abstract: 982,165. Valve and transistor oscillating circuits; frequency modulation. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 30, 1963 [Feb. 2, 1962; Oct. 10, 1962], No. 3842/63. Headings H3F, H3R and H3T. An oscillator of high frequency stability comprises a transistor with a stabilizing resistor 2, Fig. 1, in the emitter lead and a tuned circuit 4 in the base circuit, to which positive feedback is applied by means of a coupling inductor 3 in the collector circuit. In addition, negative feedback is applied to the oscillator by means of a second coupling inductor 8 in the collector circuit, which is connected in series with two rectifier diodes 9, 10 having different threshold bias voltages. The diodes permit the passage of current through the negative feedback inductor only during the peak values of the oscillations produced by the oscillator and so determine the amplitude of oscillation. The bias applied to the diodes 9, 10 may comprise a synchronizing signal. In a modification (Fig. 2, not shown), the two diodes are replaced by a single Zener diode. The arrangement may be modified to form a modulator for frequency modulation. In the modification the feedback to the tuned circuit 4, Fig. 3, includes, in addition to positive and negative feedback over inductors 3, 8 respectively a capacitive feedback over capacitor 17, derived from the output load 7. In this way the effective capacity shunting the tuned circuit 4 depends upon the gain of the transistor, which is varied by the modulating signals, the latter being applied to the base over resistor 5. The emitter-circuit resistor 2 is by-passed for the modulating signals by a capacitor 15. The capacitor 15 may be replaced by an inductor, or may alternatively be connected to the emitter, instead of to the collector circuit of the transistor, the capacitor 15 then being omitted. The transistor may in every case be replaced by a thermionic valve.
Patent GB-1184503-A (GB)
Title: Improvements in Fluid Systems for Operating Valves.
IPC: F01D17/14
Filed: 1968-01-25
Abstract: 1,184,503. Hydraulic circuits; steam turbines. GENERAL ELECTRIC CO. Jan. 25, 1968 [Feb. 20, 1967], No.3858/68. Headings F1P and F1T. A double-acting fluid motor 2-4 for positioning a steam valve (not shown) in a turbine installation is controlled by a servovalve 6 in a primary circuit 8-14, a secondary circuit 22-32 including a valve 22 for causing operation of the motor in the event of a fault occurring in the installation being connected to the motor so that the primary circuit can be serviced while still providing protection for the installation. During normal operation the secondary circuit is closed by a checkvalve 40 and a valve 30 loaded by a spring 38 assisted by the pressure directed thereto through a line 28 by the valve 22. If a fault such as a turbine overspeed is detected while the primary circuit is isolated for servicing by closure of valves 16, 18, 20, a signal is applied to the solenoid of valve 22. The valve 22 thus changes over allowing the valve 30 to open to exhaust 34 and fluid to pass check-valve 40 and cause the motor 2-4 to close the steam valve.
Patent GB-1332611-A (GB)
Title: Formation of elastic and high-tenacity fibres from butene-1 homopolymers and copolymers
IPC: D01F6/28
Filed: 1972-01-27
Abstract: 1332611 Polybutene fibres MOBIL OIL CORP 27 Jan 1972 [5 Feb 1971] 3870/72 Heading B5B Fibres are formed by melt drawing a butene based polymer from a die at a melt temperature of from 120 to 270C. and with a draw down ratio of from 10 to 300, the butene based polymer having a melt index of from 0À4 to 20 and a crystallinity of from 30 to 65, the fibres being converted from Form II to Form I. Preferably the butene based polymer is polybutene-1-homopolymer, or a copolymer of 92 mol per cent butene-1 and 8 mol per cent ethylene, but in general the term butene based polymer may include tactic polybutene-1, tactic random copolymers of butene-1 and up to 20 mol per cent ethylene, and tactic random copolymer of butene-1 and up to 20 mol per cent propylene. The draw down ratio is desirably from 10 to 50 and the fibres may be converted from Form II to Form I at ambient temperatures, especially 25-30C to form elastic fibres. Where a draw down ratio of at least 14 is used, the fibres may be spun to form high-tenacity fibres having a tenacity of at least 4 gpd, especially 4 to 15 gpd.
Patent GB-809630-A (GB)
Title: Improvements relating to a carding machine
IPC: D01G15/24
Filed: 1957-02-05
Abstract: 809,630. Carding machines. RIETER & CIE, J. J. A. G. Feb. 5, 1957 [Feb. 9, 1956], No. 3933/57. Class 120(1) A carding machine has flats 15 in which the head 9 is provided with a portion 10 resting on and conforming with the usual stationary slide surface 14, and chain support means removably connected with the head 9 and projecting laterally therefrom beyond surface 14. As shown, chain 13 is supported on a screw 11 through a bushing 16 which is held against rotation by engagement of a rectangular flange on the bushing with a corresponding recess 18 in head 9, to avoid loosening of the screw during operation of the machine. The positioning of chain 13 outside the flat and surface 14 allows the flat to be removed upwardly after removal of screw 11. Also, the moment M produced by the force A exerted by the chain and the reaction B does not, as in the usual arrangement, tend to bend the flat so that the carding surfaces are pressed together.
Patent GB-163098-A (GB)
Title: Improvements in or relating to air storage receptacles
IPC: B61D27/00
Filed: 1920-02-09
Abstract: 163,098. Adlam, E. E. Feb. 9, 1920. Forced ventilation.-Air is stored at a suitable temperature and pressure in a vacuum jacketed container and is released for heating or cooling the air &c. of closed or open spaces such as buildings, ships, vehicles, or airships; the air may be supplied through small pipes to warm gloves, boots and other wearing apparel. The supply of air to the container takes place by an automatic counterweighted valve and its outlet by a manually operated valve. A valve-casing to be screwed to the container is shown in Fig. 3; it is formed in two parts screwed together at f and contains an inlet valve k pivotally mounted and provided with a counterweight m and a screw-down valve o controlling an outlet passage h bent at right angles at the post j.
Patent GB-305582-A (GB)
Title: Advertisement board
IPC: G09F13/28
Filed: 1929-02-06
Abstract: 305,582. Zahradnik, E. Feb. 7,. 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Holders.-A notice board is provided with parallel undercut grooves wired for illuminating electric lamps placed in any position in any groove, so that the lamps may be grouped to form letters or other display matter. Fig. 3 shows the two contact leads 5 fitted in the wings of the recess 4. Each Jamp socket is provided with two radially-projecting contact arms 7, 8 which engage with the leads 5 when they are turned at right-angles to the length of the grooves in the board. One arm contacts with the filament through the medium of the pin 10, whilethe other is connected directly to the socket 2 into which the lamp is screwed. Fig., 5 shows a modified construction for outdoor use. An additional groove 12 is provided, so that both leads 5 are situated at the upper side of the grooves in the board and the cover plate is pro-- vided with studs 14 which secure it against displacement.
Patent GB-287104-A (GB)
Title: Friction type shock absorber
IPC: F16F7/04
Filed: 1928-02-08
Abstract: 287,104. Compagnie, d'Applications MÚcaniques. March 15, 1927, [Convention date]. Vibration-dampers of the friction-disc type connected bv arms to the frame and axle of a vehicle all constructed with flexible arms and with connections for the relatively removable discs which permit movement in all directions and not merely in a rotary direction, so as to allow flexing of the arms. Frictional discs 7, 8 are interposed between the centres of the arms 1, 4 connected to elements C, E pivoted to the frame and axle respectively. The arms are so connected by flanges to the interposed. friction discs 7, 8 that lateral or other relative movements of the frame and axle result in tilting of the centre pin 10 and sliding movements of the frictional elements in directions other than their usual rotary direction. The arms 4 are thinner than the arms 1.
Patent GB-1510372-A (GB)
Title: Carburettor throttle plate drive
IPC: G01M15/04
Filed: 1975-04-28
Abstract: 1510372 Electric motor driving arrangements SCANS ASSOCIATES Inc 28 April 1975 [25 June 1974] 03966/76 Divided out of 1510371 Heading H2A The throttle plate of a carburettor in a test rig (see Division G3) is driven by a stepping motor through elliptical gearing so that a fine control of the movement around the closed condition is obtained. As shown the motor 42 drives through an integral planetary reduction gear 105 and clutch 89 the first elliptical gear 90. The second elliptical gear 91 is mounted from frame 87 and carries a projecting pin 94 which engages the throttle plate operating linkage on the carburettor.
Patent GB-278939-A (GB)
Title: Improvements in rotary screening apparatus
IPC: B07B1/18
Filed: 1927-02-12
Abstract: 278,939. Watt, J., and Pool, T. A. Feb. 12, 1927. Rotary sieves; sieves with compound motion.- Screening apparatus consists of a plurality of screens of circular cross-section and graded mesh arranged around a common axis. In the construction shown in Figs. 1 and 4 the screens having sections 1, 2, 3 with perforations 6 of successively increasing size, are arranged about a common shaft 4 preferably constructed of arcuate plates 7 connected at their edges with strengthening bars 8. Radial arcuate plates 10 secured to the shaft form seatings for the screens which are secured by straps 11 and also separate the materials which pass through the sections of the screen from each other. At the inlet ends, the screens are secured by straps 13 to an apertured plate 15 forming the inner wall of a conical feed chamber to which the material is supplied through an opening 20. The apparatus is supported at the feed end by a rim 21 and rollers 22 and at the other end by a stub shaft 29 carried by a closing plate 27 and is driven by suitable gearing such as the bevel wheel 28. Removable wearing plates 36 may be provided on the outer faces of the shaft between the seating plates 10, and the sections 1 may be surrounded by an additional screen 5 of smaller mesh. In modifications, the screens may have independent rotary movement about their own axes, or longitudinal reciprocating movements or both in addition to their movement about the common axis.
Patent GB-247579-A (GB)
Title: Improvements in and relating to machine tools for turning or cutting metal
IPC: B23Q11/12
Filed: 1924-11-19
Abstract: 247,579. Potter, W. W. Dec. 11, 1923, [Convention date]. Turning; chucks.-In a metal cutting machine tool wherein the actuating gearing is enclosed in a hollow casing 11, this gearing is lubricated by means of a pipe 106 provided with perforations 107 and supplied with oil by a pipe 108 connected to a pump 109 of the meshing-gear type. The pipe 106 is rotated by gearing 111 from a clutch 27 and part of the oil passes into a cup 114 leading through a glass tube 119 and back into the casing at 119<a> to enable the circulation to be observed. The pump draws from the bottom of the casing and is situated low down to avoid the necessity for priming. The spindle bearings 20 have passages 121, 122 for the supply and discharge of oil respectively, and all the openings of the casing are packed. The work-spindle 12 is rotated by gearing 170 and a friction clutch 18 from an electric motor 15 outside the casing and carries a chuck 13. Specification 226,178 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a pin 69 securing a piston to be operated on to the draw-spindle 70. Cams 21, 22 for controlling the cutting tools are rotated by differential gearing 23 from a shaft 26. This subject-matter does not appear in the Specification as accepted.
Patent GB-265997-A (GB)
Title: Improvements in the construction of houses
IPC: E04B1/20
Filed: 1927-02-14
Abstract: 265,997. Rateau, E. Feb. 12, 1926, [Convention date]. Moulding string courses in situ. - Moulds for the string course over the tops of stanchions in a slab wall consist of base sections m, sides d, e, and top pieces f, g; the moulds are supported by angle-irons temporarily bolted to the stanchions, and are braced by irons i, j.
Patent GB-127034-A (GB)
Title: Improvements in Charging Mechanisms for the Magazines of Machine Guns.
Inventor: EVANS WALTER JAMES
IPC: F41A9/83
Filed: 1917-09-20
Abstract: 127,034. Evans, W. J. Sept. 20, 1917. Cartridge magazines.-Relates to machines for charging cartridge magazines such as those used in the Lewis gun, and consists in providing an impeller f intermittently rotated through a shaft i and pinion j by interrupted teeth k on a hand-wheel l (see plan, Fig. 2), for moving the cartridges d from a hopper guide e through an opening c into the radial compartments of the magazine a, the hand-wheel being also provided with projections o for rotating the magazine, and an annular arrangement of cams m for operating a spring-controlled shutter g which closes communication between the guide e and the magazine whilst the magazine is being rotated. A spring-controlled lever r, normally held inoperative by the cartridges in the guide e, stops the impeller if the supply of cartridges fails. The pinion j and the notches on the periphery of the magazine a are acted upon by spring-controlled pins such as p to prevent overrunning.
Patent GB-588459-A (GB)
Title: Improvements in and relating to egg cups or holders
IPC: A47G19/28
Filed: 1945-02-19
Abstract: 588,459. Egg cups, cosies, and table knives. TISSHAW; W. A. Feb. 19, 1945, No. 4160. [Classes 30 and 128] An egg cup, Fig. 1, made of metal, wood, china, clay or plastic material comprises lower and upper cups 1 and 3 ; the latter acting either as a lid or alternatively as a holder for the severed top of an egg. The cups may be. connected by a hinge 4. Their rims provide a flared lead-in 6 for a knife and their inside surfaces may be fluted or roughened as shown at 12 and 13. A spring 11 may be fitted in the lower cup to enable eggs of different sizes to be accommodated. A knife, Fig. 3, has a blade 7 shaped to cover the cross-section of an egg, and an edge serrated at 8 and 9 for cutting in opposite directions, there being a medial knife-edge portion 10.
Patent GB-1445211-A (GB)
Title: Preparation of phenyl propionic acid derivatives
IPC: C07C59/84
Filed: 1974-01-29
Abstract: 1445211 2-(4-Alkylphenyl)-propionic acids and butenoic acid intermediates NISSHIN FLOUR MILLING CO Ltd 29 Jan 1974 [29 Jan 1973 (2)] 04174/74 Heading C2C The invention comprises (a) compounds II in which R<SP>1</SP> is C 2-4  alkyl and R<SP>2</SP> is C 1-3  alkyl, (b) their preparation by reacting a compound IV with a Lewis acid in an aprotic, polar solvent, and (c) the preparation of compounds I or a salt thereof, by reacting a compound II with an alkali metal alcoholate in an alcohol to give a corresponding alkyl 3-methyl-3-(4-alkylphenyl)pyruvate, hydrolysing this to produce the corresponding pyruvic acid, or a salt thereof, and oxidizing this to give a compound I or a salt thereof. Compounds I and their salts have anti-inflammatory activity.
Patent GB-156426-A (GB)
Title: Improvements in or relating to alloys for "filling in" defective castings
IPC: C22C30/04
Filed: 1920-02-11
Abstract: 156,426. Treanor, F. P. Feb. 11, 1920. Alloys for filling-in defects in castings, particularly internal-combustion engine cylinders, consists of about 40-45 per cent of lead, 12-15 per cent of antimony, 34-40 per cent of tin, and 6-11 per cent of copper. Separate alloys are first made of the lead, antimony, and a small part of the tin, and of the copper and the remainder of the tin, and the two alloys so produced are made into the final alloy. The alloy may be applied to the casting in the manner. described in Specification 156,999 or by cleaning the cavity mechanically and chemically, running in the alloy with a flux, and working it with a copper bit and a hot flame. An alloy comprising 5-45 per cent of lead, 10-25 per cent of antimony, 30-70 per cent of tin and 15-40 per cent of copper, with traces of iron, is also referred to.
Patent GB-383127-A (GB)
Title: Improvements in or relating to arc-extinguishing means for high-potential electric switches
IPC: H01H33/86
Filed: 1932-02-13
Abstract: 383,127. High-tension switches. LANGE, E., 73, Grossbeerenstrasse, Berlin. Feb. 13, 1932, No. 4308. Convention date, Feb. 16, 1931.. [Class 38 (v).] Arc-rupturing.-A switch has a break-point 15 arranged inside a pressure, chamber 14, which has a nozzle 12. opposite another breakpoint 6, so that the increase of pressure in the chamber 14 caused by the arc at the break point 15, produces an air or gas current which is directed on to the break-point 6, to extinguish the arc produced there. The chamber 14 has a valve 16 which is closed by the increase of pressure in the chamber 14, and through which air is supplied to the chamber 14. The air passes in through a valve 19 and a compartment 17 containing carbon-dioxide snow or similar cooling means 18. The compartment 4 in which the break-point 6 is situated has recesses 13 below the break-point, in which additional cooling means may be contained, and also discharge passages 9 are provided to lead the gases upwards and through a valve 10. Arcing horns 8 are provided for the breakpoint 6. The break-points 6, 15 may be toggle actuated or they may be actuated through wheels engaging with teeth 7a. A resistance 20 may be provided in the shunt circuit containing the break-point 15. The break-points may be arranged in series or parallel.
Patent GB-499441-A (GB)
Title: Improvements in and relating to centrifugal dust separators
IPC: B04C5/28
Filed: 1938-02-11
Abstract: 499,441. Centrifugal dust separators. PRAT-DANIEL CORPORATION. Feb. 11, 1938, No. 4378. Convention date, Feb. 12, 1937. [Class 23] Particles suspended in gases are separated by passage through a number of cyclone separators 12 connected in parallel between a common supply chamber 10 and a common outlet chamber. Each separator has an axial outlet 15, and a tangential inlet 11 provided with a hinged damper 17 operated by an arm 18 so that the available cross-sectional area 'of the inlet can be varied as the pressure difference between the inlet and outlet chambers varies. In the arrangement shown in Fig. 1, the separators 12 are placed in four rows, and arms 18 of the dampers in each row are connected to an actuating rod 19 attached to a bar 20 so that all the dampers can be operated simultaneously by the electric motor 23. The pressure chamber 26 is divided by a diaphragm 25 and the upper part is connected by a pipe 24 to the inlet chamber 10, and the lower part is connected by the pipe 27 to the outlet chamber. The diaphragm thus moves up and down with variations in the pressure difference to operate a mercury switch 31 to close the circuit of the motor 23 for forward or reverse rotation. The connections are such that when the pressure difference increases to press the diaphragm 25 down, the dampers are operated to increase the area of the inlets. In a modification the electric motor 23 is replaced by a cylinder and piston operated by pressure fluid under the control of electrically - actuated valves. A manometer may be connected across the pipes 24, 27, and in an emergency the dampers may be operated manually in accordance with the manometer readings. In the modification shown in Fig. 6, the inlet chamber 61 is placed between outlet chambers 62, 63 over two rows of separators. The dampers are operated by rods 64, 65, connected to crank arms on grooved pulleys 68, 69 having a cross belt connection. A handle is provided so that the dampers can be set in accordance with the readings of a manometer connected to the inlet and outlet chambers.
Patent GB-723200-A (GB)
Title: Filtering device
Inventor: FRICKE GUY CLAYTON
IPC: B01D29/21
Filed: 1951-07-27
Abstract: The subject-matter of this Specification is substantially the same as that of Specification 723,107 but the claims are directed to the case where the shell surrounding the pleated filter material is spaced from one of the plates.
Patent GB-1221742-A (GB)
Title: Improvements in or relating to pressing filters
IPC: B01D33/04
Filed: 1969-01-27
Abstract: 1,221,742. Pressing filters. JOSEF WILLMES K.G. 27 Jan., 1969 [16 Feb., 1968; 19 Dec., 1968], No. 4382/69. Heading B1D. [Also in Division A4] In the type of extraction apparatus wherein a filter web 23 travels through a compression zone 11 of progressively decreasing width defined by a pair of rotary members 1, at least one member 1 comprises an endless conveyor of hinged plate-like elements 8 whose lengths are at least equal to the separations between backing pressure rollers 19. This arrangement is stated to produce a more uniform pressure distribution. As described, filter web 23 is endless and is suspended from chains 24. Throughout most of its path it is relatively flat, but it is caused to adopt a U-section shape, Fig. 3, when passing through the compression zone 11 between the converging conveyor members. The open top of the U-section web 23 may be closed off during compression, to define (in effect) a tube (Figs. 13, not shown). Fruit pulp is introduced at 22 and expressed and filtered juice is caught by trough 31. Plate members 8 may be imperforate or formed from intercolated bars (Fig. 7, not shown). Rollers 19 are resiliently loaded. In other embodiments: (i) web 23 is replaced by three similar parallel webs, (Fig. 12, not shown); (ii) the conveyor runs are horizontal, web 23 being replaced by two endless non-profiled webs (50, 51, Fig. 14, not shown); (iii) one conveyor is replaced by a drum (35) which rotates inside the other conveyor (ii), a pair of filter webs (38, 39) moving in the compression zone so defined between them (Figs. 15, 16, not shown). Other features. The pulp may be preliminarily squeezed in the filter web by an array of rollers (53) before entering input zone 22, Figs. 8, 9 (not shown). Roller adjusting means, and means for scraping, brushing, beating and washing the filter web, are disclosed.